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Detecting Prolonged Myocardial Repolarization Indicative of Cardiac Condition

a myocardial repolarization and cardiac condition technology, applied in bioelectric signal measurement, medical science, diagnostics, etc., can solve the problems of presently significant limitations in diagnosis of transmural ischemia/myocardial infarction, and achieve the effect of sensitive and specificity, enhancing diagnosis and therapy

Inactive Publication Date: 2008-07-03
HENRY FORD HEALTH SYST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0016]The present invention may greatly enhance the diagnosis and therapy of brief or intermittent episodes of transmural ischemia. If the patient's baseline ECG and / or QTc is available, measurement of QTc may provide an extremely sensitive and specific way to detect transmural ischemia very early in its course. From our discovery. QTc prolongation in this setting should be very sensitive to detect early transmural ischemia.

Problems solved by technology

There are presently significant limitations in diagnosis of transmural ischemia / myocardial infarction.
However, this is not seen in all cases of transmural ischemia, and often the only manifestations are non-specific signs such as ST depression or T wave inversions.

Method used

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  • Detecting Prolonged Myocardial Repolarization Indicative of Cardiac Condition
  • Detecting Prolonged Myocardial Repolarization Indicative of Cardiac Condition
  • Detecting Prolonged Myocardial Repolarization Indicative of Cardiac Condition

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examples

[0046]By way of example, without limiting the scope of embodiments of the invention, the invention may comprise some or all of the following steps.

[0047]Some embodiments of the invention may comprise several steps of a method for determining prolonged myocardial repolarization by accumulation and analysis of patient data by comparison to patient baseline and / or reference data.

[0048]For example, after signing informed consent, patients are prepared for elective PCI in standard fashion. Patient history and demographic information, including for example, age, gender, height, weight, family history of premature cardiovascular disease, a past medical history of hypertension, hyperlipidemia, diabetes, CVA, renal failure, peripheral vascular disease, prior CABG, prior MI, prior PCI, prior or current tobacco use, current medications, or the like.

[0049]ECG electrodes are suitably placed on the subject. (See for example, FIGS. 6(A)-(B)). During the placement of electrodes for the surface elec...

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Abstract

The present invention comprises methods and apparatus for detecting prolonged myocardial repolarization as an indicator of cardiac conditions, including without limitation, transmural ischemia. In some embodiments, without limitation, the present invention comprises methods and apparatus to detect prolonged repolarization using electrocardiographic and electrophysiological tools and measurements.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority based on U.S. Provisional Patent Application No. 60 / 544,171, filed Feb. 11, 2004, which is hereby incorporated by reference in full.FIELD OF THE INVENTION[0002]The present invention relates to methods and apparatus for detecting prolonged myocardial repolarization as an indicator of cardiac condition, including without limitation, transmural ischemia. In some embodiments, without limitation, the present invention comprises methods and apparatus to detect prolonged repolarization using electrocardiographic and electrophysiological tools and measurements.BACKGROUND[0003]Many cardiac conditions can be detected by measuring and recording electrical signals from the heart. When displayed, the electrical signals form various patterns, which can be visually recognized. Electrocardiograms (“ECGs”) are routinely used for diagnosis and therapy of various cardiac conditions. However, the electrocardiograms measured a...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61B5/0468A61B5/364A61B5/366
CPCA61B5/0468A61B5/04525A61B5/35A61B5/364
Inventor KENIGSBERG, DAVID N.KHANAL, SANJAYAKOWALSKI, MARCINKRISHNAN, SUBRAMANIAM
Owner HENRY FORD HEALTH SYST
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